Lexus ES: Problem Symptoms Table
Lexus ES (XZ10) Service Manual / Vehicle Interior / Exterior Panels / Trim / Grille Shutter System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
-
Before performing troubleshooting, change the grille shutter control mode to maintenance mode.
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If the swing grille actuator assembly has been replaced with a new one, perform initialization and change the grille shutter control mode.
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HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Grille shutter does not operate | Proceed to "Grille Shutter does not Operate" | |
| Abnormal noise occurs during grille shutter operation | Check for ice, etc. around the shutters and links | - |
| Swing grille actuator assembly | | |
| Radiator shutter sub-assembly | |
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Terminals Of Ecu
TERMINALS OF ECU CHECK SWING GRILLE ACTUATOR ASSEMBLY (a) Disconnect the z23 swing grille actuator assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table be
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Grille shutter system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunc
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / (desired system) / T
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If a warning message is displayed
The multi-information display
shows warnings of system malfunctions,
incorrectly performed operations,
and messages that indicate a
need for maintenance. When a
message is shown, perform the correction
procedure appropriate to
the message.
Master warning light
The master warning lig
Catalyst System Efficiency Below Threshold Bank 1 (P042000,P043000)
MONITOR DESCRIPTION The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst informat
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